* {
    margin: 0;
    padding: 0;
}

body {
    background-color: #333;
    height: 100vh;
}

.container {
    height: 100vh;
    background-color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;

}

.container-active {
    transform-origin: top left;
    transform: rotate(-10deg);
    transition: transform 1s linear;
}

.container-active2 {
    transform-origin: top left;
    transform: rotate(0deg);
    transition: transform 1s linear;
}

body .btn {
    width: 100px;
    height: 100px;
    background-color: pink;
    display: flex;
    justify-content: space-around;
    align-items: center;
    border-radius: 50%;
    position: fixed;
    top: -50px;
    left: -50px;
    z-index: 99;

}

.active {
    transform-origin: center;
    transform: rotate(-90deg);
    transition: transform 1s linear;
}

.return-active {
    transform-origin: center;
    transform: rotate(0deg);
    transition: transform 1s linear;
}



.btn .open {
    position: absolute;
    left: 20px;
    top: 59px;
    transform-origin: center;
    transform: rotate(90deg);
}

.btn .close {
    position: absolute;
    right: 22px;
    top: 61px;
}
ul{
    position: absolute;
    bottom: 58px;
    left: 34px;
    list-style: none;
    /* display: none; */
    
}
ul li a{
    text-decoration: none;
    color: #fff;
}
/* .ul-active{
    display: block;
    transition: display 1s linear;
} */